Effects of Leghaemoglobin Components on Nitrogen Fixation and Oxygen Consumption
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概要
- 論文の詳細を見る
The effects of purified oxyleghaemoglobin components added to a suspension of bacteroids from soybean and pea root nodule prepared anaerobically were studied in terms of nitrogen fixation and oxygen consumption. Soybean leghaemoglobin components (Lb a and Lb c) and pea leghaemoglobin components (Lb I and Lb IV) have different O_2 binding affinities. Lb a and Lb IV showed higher O_2 binding affinities than Lb c and Lb I. When anaerobically prepared bacteroids were incubated with these leghaemoglobin components separately under low oxygen tension and in the presence of a reduction system, Lb a and Lb IV were more effective for both nitrogen fixation and oxygen consumption than Lb c and Lb I. These results suggest that leghaemoglobin components participate in more effective nitrogen fixation by controlling oxygen transport to bacteroids.
- 日本植物生理学会の論文
著者
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Syono Kunihiko
Department Of Life Science Graduate School Of Arts And Sciences University Of Tokyo:(present Address
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Uheda Eiji
Department Of Biology College Of Education University Of Tokyo
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